The Earth's tilt changes over time. In the periods when the tilt decreases, what changes to the ...

The Earth's tilt changes over time. In the periods when the tilt decreases, what changes to the seasons would you expect?
A) Summers will get colder and winters warmer in both hemispheres.
B) Summers will get warmer and winters colder in both hemispheres.
C) Summers will get colder and winters warmer in the northern hemisphere and the reverse will occur in the southern hemisphere.
D) Summers will get colder and winters warmer in the southern hemisphere and the reverse will occur in the northern hemisphere.
E) The seasons will be unaffected.